Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include changes in shape, size, or state of matter.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves making or breaking bonds between atoms. Examples include rusting, burning, and cooking.

Front

Is hammering wood to build a treehouse a physical or chemical change?

Back

Physical change.

Front

Is mowing the lawn a physical or chemical change?

Back

Physical change.

Front

Is squeezing oranges to make orange juice a physical or chemical change?

Back

Physical change.

Front

What happens to water when it evaporates?

Back

When water evaporates, it changes from a liquid state to a gas state.

Front

What happens to water when it condenses?

Back

When water condenses, it changes from a gas state back to a liquid state.

Front

What are the two main types of changes in matter?

Back

The two main types of changes in matter are physical changes and chemical changes.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice.

Front

What is an example of a chemical change?

Back

An example of a chemical change is baking a cake.